Look in the mirror and raise your left hand. What does it look like in the mirror?

In this case, the mirror shows the image of raising the right hand.

The principle of mirror image means that when light shines on a plane mirror, it will reflect back according to certain rules, forming an image opposite to the original. This law is the mirror principle, also known as the left-right inversion law. When the left hand is held in front of the mirror, the light will shoot from the left hand to the mirror and reflect back on the mirror, forming an image opposite to the original left and right. Because the left hand is raised to the left, the light will hit the mirror from the left and reflect on the mirror to form an image.